CVE-2026-46189

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-28. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path

Sashiko points out that pvrdma_uar_free() is already called within pvrdma_dealloc_ucontext(), so calling it before triggers a double free.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
4%
KEV
Not listed

Published

May 28, 2026

Last Modified

July 16, 2026

Advisory Details (8)

Auto-updated Jun 11, 2026
No patch confirmed yet.
generic

RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ecc36a82ecfcfdf3c6606d209f22ec5543c410e0
generic

RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e38e86995df27f1f854063dab1f0c6a513db3faf
generic

RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/935ee27d0904aa944cbcc979094c20e5ef62eead
generic

RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/45d25e3ec17900bf5a9d6876ff16ceee31c4c0e0
generic

RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3a231c34c5bc3d3cfc850b877758ec9fdaa8a483
generic

RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/269967d7693304e1f06ed2dff4ebbbeeb397cda4
generic

RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1df5711121cdc11e76b889408fdbe459feba1d39
generic

RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0c63333ff97bd1275294fd12840a0efe9d7a4c59

Vendor Advisories for CVE-2026-46189(12)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(10)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-0:4.18.0-477.152.1.el8_82026-07-16redhat
redhatkernel-0:4.18.0-372.201.1.el8_62026-07-15redhat
redhatkernel-0:5.14.0-570.127.1.el9_62026-07-13redhat
redhatkernel-0:5.14.0-427.136.1.el9_42026-07-08redhat
redhatkernel-rt-0:4.18.0-553.139.1.rt7.480.el8_102026-07-07redhat
redhatkernel-0:5.14.0-284.179.1.el9_22026-07-07redhat
redhatkernel-rt-0:5.14.0-284.179.1.rt14.464.el9_22026-07-06redhat
redhatkernel-0:6.12.0-211.29.1.el10_22026-06-30redhat
redhatkernel-0:4.18.0-553.139.1.el8_102026-06-30redhat
redhatkernel-0:5.14.0-687.19.1.el9_82026-06-29redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 13× in last 7d / 69× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 155 total refreshes for this CVE.

  1. 2026-07-27 14:13 UTCEPSS rescore
  2. 2026-07-27 09:46 UTCEG score recompute
  3. 2026-07-27 09:46 UTCVendor advisory
  4. 2026-07-27 09:46 UTCGHSA enrichment
  5. 2026-07-26 14:54 UTCEPSS rescore
  6. 2026-07-26 14:54 UTCEPSS rescore
  7. 2026-07-25 14:18 UTCEPSS rescore
  8. 2026-07-24 14:17 UTCEPSS rescore
  9. 2026-07-23 14:18 UTCEPSS rescore
  10. 2026-07-23 03:16 UTCEG score recompute
  11. 2026-07-22 14:08 UTCEPSS rescore
  12. 2026-07-21 15:24 UTCEPSS rescore
  13. 2026-07-20 17:08 UTCEPSS rescore
  14. 2026-07-19 14:31 UTCEPSS rescore
  15. 2026-07-19 02:29 UTCEPSS rescore
  16. 2026-07-18 10:04 UTCEPSS rescore
  17. 2026-07-16 17:03 UTCEPSS rescore
  18. 2026-07-16 12:29 UTCNVD updateCVSS v3 → 7.8
  19. 2026-07-16 12:08 UTCMITRE cvelistV5CVSS v3 → 7
  20. 2026-07-16 10:20 UTCVendor advisory
  21. 2026-07-16 10:20 UTCGHSA enrichment
  22. 2026-07-15 16:57 UTCEPSS rescore
  23. 2026-07-15 02:26 UTCNVD updateCVSS v3 → 7.8
  24. 2026-07-15 02:00 UTCEPSS rescore
  25. 2026-07-15 01:21 UTCMITRE cvelistV5CVSS v3 → 7
Show 75 more
  1. 2026-07-14 13:19 UTCNVD updateCVSS v3 → 7.8
  2. 2026-07-14 12:10 UTCMITRE cvelistV5CVSS v3 → 7
  3. 2026-07-13 22:30 UTCEPSS rescore
  4. 2026-07-13 06:13 UTCEPSS rescore
  5. 2026-07-12 05:46 UTCEPSS rescore
  6. 2026-07-11 21:15 UTCVendor advisory
  7. 2026-07-11 21:15 UTCGHSA enrichment
  8. 2026-07-11 08:27 UTCEPSS rescore
  9. 2026-07-09 19:10 UTCEPSS rescore
  10. 2026-07-09 13:52 UTCNVD updateCVSS v3 → 7.8
  11. 2026-07-09 12:25 UTCMITRE cvelistV5CVSS v3 → 7
  12. 2026-07-08 18:20 UTCVendor advisory
  13. 2026-07-08 18:20 UTCGHSA enrichment
  14. 2026-07-08 15:16 UTCEPSS rescore
  15. 2026-07-07 14:14 UTCNVD updateCVSS v3 → 7.8
  16. 2026-07-07 13:46 UTCEPSS rescore
  17. 2026-07-07 12:11 UTCMITRE cvelistV5CVSS v3 → 7
  18. 2026-07-06 02:23 UTCEPSS rescore
  19. 2026-07-05 02:30 UTCEPSS rescore
  20. 2026-07-04 06:31 UTCEPSS rescore
  21. 2026-07-02 14:14 UTCVendor advisory
  22. 2026-07-02 14:14 UTCGHSA enrichment
  23. 2026-07-01 15:07 UTCEPSS rescore
  24. 2026-07-01 14:05 UTCVendor advisory
  25. 2026-07-01 14:05 UTCGHSA enrichment
  26. 2026-07-01 03:06 UTCVendor advisory
  27. 2026-07-01 03:06 UTCGHSA enrichment
  28. 2026-06-30 23:22 UTCEPSS rescore
  29. 2026-06-30 04:33 UTCNVD updateCVSS v3 → 7.8 · severity → HIGH
  30. 2026-06-30 01:59 UTCVendor advisory
  31. 2026-06-30 01:59 UTCGHSA enrichment
  32. 2026-06-29 14:06 UTCEPSS rescore
  33. 2026-06-29 14:06 UTCEPSS rescore
  34. 2026-06-29 13:44 UTCVendor advisory
  35. 2026-06-29 13:44 UTCGHSA enrichment
  36. 2026-06-28 16:27 UTCVendor advisory
  37. 2026-06-28 16:27 UTCGHSA enrichment
  38. 2026-06-28 14:07 UTCEPSS rescore
  39. 2026-06-28 05:10 UTCVendor advisory
  40. 2026-06-28 05:10 UTCGHSA enrichment
  41. 2026-06-28 04:56 UTCEPSS rescore
  42. 2026-06-28 04:56 UTCEPSS rescore
  43. 2026-06-27 18:14 UTCVendor advisory
  44. 2026-06-27 18:14 UTCGHSA enrichment
  45. 2026-06-27 05:27 UTCVendor advisory
  46. 2026-06-27 05:27 UTCGHSA enrichment
  47. 2026-06-27 03:08 UTCEPSS rescore
  48. 2026-06-26 16:51 UTCVendor advisory
  49. 2026-06-26 16:51 UTCGHSA enrichment
  50. 2026-06-25 20:36 UTCVendor advisory
  51. 2026-06-25 20:36 UTCGHSA enrichment
  52. 2026-06-25 13:49 UTCEPSS rescore
  53. 2026-06-25 09:38 UTCVendor advisory
  54. 2026-06-25 09:38 UTCGHSA enrichment
  55. 2026-06-24 22:42 UTCVendor advisory
  56. 2026-06-24 22:42 UTCGHSA enrichment
  57. 2026-06-24 14:05 UTCEPSS rescore
  58. 2026-06-23 21:33 UTCEPSS rescore
  59. 2026-06-23 21:33 UTCEPSS rescore
  60. 2026-06-22 14:25 UTCEPSS rescore
  61. 2026-06-22 14:25 UTCEPSS rescore
  62. 2026-06-21 14:56 UTCEPSS rescore
  63. 2026-06-21 14:56 UTCEPSS rescore
  64. 2026-06-21 01:59 UTCEPSS rescore
  65. 2026-06-21 01:59 UTCEPSS rescore
  66. 2026-06-19 19:26 UTCEPSS rescore
  67. 2026-06-19 19:26 UTCEPSS rescore
  68. 2026-06-18 17:52 UTCEPSS rescore
  69. 2026-06-18 17:52 UTCEPSS rescore
  70. 2026-06-18 01:27 UTCVendor advisory
  71. 2026-06-18 01:26 UTCGHSA enrichment
  72. 2026-06-17 17:53 UTCEPSS rescore
  73. 2026-06-17 13:34 UTCGHSA enrichment
  74. 2026-06-17 02:38 UTCGHSA enrichment
  75. 2026-06-16 17:52 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-46189?
CVE-2026-46189 is a high vulnerability published on May 28, 2026. In the Linux kernel, the following vulnerability has been resolved: RDMA/vmwpvrdma: Fix double free on pvrdmaalloc_ucontext() error path Sashiko points out that pvrdmauarfree() is already called within pvrdmadeallocucontext(), so calling it before triggers a double free.
When was CVE-2026-46189 disclosed?
CVE-2026-46189 was first published in the National Vulnerability Database on May 28, 2026, with the most recent update on July 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-46189 actively exploited?
CVE-2026-46189 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 95.9% of all scored CVEs.
What is the CVSS score of CVE-2026-46189?
CVE-2026-46189 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-46189?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46189, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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